Another glaze I mixed up today was some old MS34 Burnt Sienna. (2 kg dry)I'm guessing that this is a Luguna product.

I mixed up the powdered glaze with a high speed blender for 5 minutes and transferred to another bucket through a sieve.

The amount of solids in the sieve was startling. There was enough material in the sieve (maybe 500 - 600 grams) that I figure that it should be either in solution or a much finer particle in suspension.

Has anyone seen this occur with old glazes or this burnt sienna?

I put all of it back into the bucket and mixed another 5 minutes.I will allow it to hydrate overnight and give it another mix in the morning.